there are many ways of communicating without using speech . signals,signs,symbols,and gestures may be found in every known culture . the basic function of a signal is to impinge upon the environment in such a way that it attention,as,for example,the dots and dashes of a telegraph circuit.coded to refer to speech,the potential for communication is very great . while less adaptable to the codification of words,sign contain greater meaning in and of themselves . A stop sign or a barber pole conveys meaning quickly and conveniently . symbols are more difficult to describe than either signals or signs because of their intricate relationship with the receiver's cultural perceptions . in some cultures,applaud in a theater provides performers with an audio symbol of approval . gestures such as waving and handshaking also communicates certain cultural messages.